Portable speaker



FIG. 1 is a front perspective view of a portable speaker showing my new design;

FIG. 2 is a front view of the portable speaker shown in FIG. 1.

FIG. 3 is a rear view of the portable speaker shown in FIG. 1.

FIG. 4 is a left-side view of the portable speaker shown in FIG. 1.

FIG. 5 is a top view of the portable speaker shown in FIG. 1.

FIG. 6 is bottom view of the portable speaker shown in FIG. 1; and,

FIG. 7 is an opened rear perspective view of portable speaker shown in FIG. 1.

The broken line showing on the drawing disclosure is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portable speaker, as shown and described. 